85 lines
3.2 KiB
C
85 lines
3.2 KiB
C
/*
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File: file_fob.c
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Copyright (C) 2008 Christophe GRENIER <grenier@cgsecurity.org>
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This software is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along
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with this program; if not, write the Free Software Foundation, Inc., 51
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Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#if !defined(SINGLE_FORMAT) || defined(SINGLE_FORMAT_fob)
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#ifdef HAVE_STRING_H
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#include <string.h>
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#endif
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#include <stdio.h>
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#include "types.h"
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#include "filegen.h"
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#include "memmem.h"
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/*@ requires valid_register_header_check(file_stat); */
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static void register_header_check_fob(file_stat_t *file_stat);
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const file_hint_t file_hint_fob= {
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.extension="fob",
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.description="Microsoft Dynamics NAV (MS Navision)",
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.max_filesize=PHOTOREC_MAX_FILE_SIZE,
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.recover=1,
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.enable_by_default=1,
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.register_header_check=®ister_header_check_fob
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};
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/*@
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@ requires separation: \separated(&file_hint_fob, buffer+(..), file_recovery, file_recovery_new);
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@ requires valid_header_check_param(buffer, buffer_size, safe_header_only, file_recovery, file_recovery_new);
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@ ensures valid_header_check_result(\result, file_recovery_new);
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@ assigns *file_recovery_new;
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@*/
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static int header_check_fob(const unsigned char *buffer, const unsigned int buffer_size, const unsigned int safe_header_only, const file_recovery_t *file_recovery, file_recovery_t *file_recovery_new)
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{
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static const unsigned char sign_navnl[5] = {'N','A','V','N','L'};
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static const unsigned char sign_navw[4] = {'N','A','V','W'};
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const char *sbuffer=(const char *)buffer;
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unsigned int tmp=0;
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const char *pos1=(const char *)td_memmem(buffer, buffer_size, sign_navnl, sizeof(sign_navnl));
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const char *pos2=(const char *)td_memmem(buffer, buffer_size, sign_navw, sizeof(sign_navw));
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if(pos1==NULL && pos2==NULL)
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return 0;
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if(pos1!=NULL)
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tmp=pos1-sbuffer;
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if(pos2!=NULL && pos2-sbuffer > tmp)
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tmp=pos2-sbuffer;
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reset_file_recovery(file_recovery_new);
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file_recovery_new->extension=file_hint_fob.extension;
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file_recovery_new->min_filesize=tmp;
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return 1;
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}
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static void register_header_check_fob(file_stat_t *file_stat)
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{
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register_header_check(0, "Codeunit ", 9, &header_check_fob, file_stat);
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#ifndef DISABLED_FOR_FRAMAC
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register_header_check(0, "Dataport ", 9, &header_check_fob, file_stat);
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register_header_check(0, "Form ", 5, &header_check_fob, file_stat);
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register_header_check(0, "MenuSuite ", 10, &header_check_fob, file_stat);
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register_header_check(0, "Report ", 7, &header_check_fob, file_stat);
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register_header_check(0, "Table ", 6, &header_check_fob, file_stat);
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register_header_check(0, "XMLport ", 8, &header_check_fob, file_stat);
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#endif
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}
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#endif
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